Restoration success evaluation of a thinned and enriched pine plantation in Sri Lanka

Jayawardhane J., . and Gunaratne A. M. T. A., . Restoration success evaluation of a thinned and enriched pine plantation in Sri Lanka. pp. 402-413. ISSN 0128-1283

Enrichment of monoculture plantations with broad-leaved species convert poorly managed exotic plantations into mixed species woodlands with enhanced ecosystem services. However the effect of enrichment planting on the recruitment of plant diversity is poorly understood. This study aims to investigate the effect of enrichment planting in an eleven-year-old restored Pine (Pinus caribaea Morelet) plantation (RP) and a 25“30-year-old unrestored Pine plantation (UP) in Hantana Sri Lanka. All naturally regenerated woody species were tagged identified and counted. The height and the diameter at breast height were measured. Nearly four times more woody species emerged from RP than UP. However majority of species in both RP and UP were represented by the exotic invasive tree species Alstonia macrophylla Wall. ex G. Don. The mean density of seedlings of woody species was higher in RP than UP. The Shannon-Wiener diversity index was higher in RP than UP for all different life stages. Endemics were only recorded in RP. Since improved plantation structure and higher diversity was recorded in RP than UP thinning followed by enrichment planting can be used to restore monoculture Pine plantation into mixed species plantations.

Full text available from: Official URL: https://info.frim.gov.my/infocenter_applications/j...

Abstract

Enrichment of monoculture plantations with broad-leaved species convert poorly managed exotic plantations into mixed species woodlands with enhanced ecosystem services. However the effect of enrichment planting on the recruitment of plant diversity is poorly understood. This study aims to investigate the effect of enrichment planting in an eleven-year-old restored Pine (Pinus caribaea Morelet) plantation (RP) and a 25“30-year-old unrestored Pine plantation (UP) in Hantana Sri Lanka. All naturally regenerated woody species were tagged identified and counted. The height and the diameter at breast height were measured. Nearly four times more woody species emerged from RP than UP. However majority of species in both RP and UP were represented by the exotic invasive tree species Alstonia macrophylla Wall. ex G. Don. The mean density of seedlings of woody species was higher in RP than UP. The Shannon-Wiener diversity index was higher in RP than UP for all different life stages. Endemics were only recorded in RP. Since improved plantation structure and higher diversity was recorded in RP than UP thinning followed by enrichment planting can be used to restore monoculture Pine plantation into mixed species plantations.

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Item Type:	Article
AGROVOC Term:	Pine (tree)
AGROVOC Term:	Pinus caribaea
AGROVOC Term:	Forest plantations
AGROVOC Term:	Forest management
AGROVOC Term:	Restoration
AGROVOC Term:	Thinning
AGROVOC Term:	Floristic composition
AGROVOC Term:	Species diversity
AGROVOC Term:	Seed dispersal
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9335

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